Vacuum cleaner

ABSTRACT

Disclosed is a vacuum cleaner capable of collecting at one place external air absorbed in the interior of the main machine through the absorption motor, exhausting the collected external air using strong blasting force. Usually, in case that dusts exist on the corner section or the gap section upon cleaning of the bottom part with use of the vacuum cleaner, a user could not bring the absorption nozzle close to the dusts accumulated section and sucking force does not reach that dust accumulated section, whereby the dust gets difficult to wipe out. Therefore, the vacuum cleaner has the closed space part in the internal rear part of the main machine in which the absorption motor is installed, and has, in the closed space part, the exhausting hole to which the blasting nozzle is joined in a free attaching and detaching manner. Thanks to such construction, the vacuum cleaner easily eliminates dusts by blowing down dusts accumulated on the corner section or the gap section, and sprays cleaning water using strong pressure in case that the spraying container is joined to the entry side of the exhausting hole, so that the bottom portion is more effectively cleaned.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a vacuum cleaner capable ofcollecting at one place external air absorbed in the interior of themain machine through the absorption motor, exhausting the collectedexternal air using strong blasting force.

[0003] 2. Description of the Related Art

[0004] In general, the vacuum cleaner absorbs dusts together withexternal air by making the internal front part of the main machinevacuum state using the absorption motor installed in the internal rearpart of the main machine. At the moment, dusts included in the externalair absorbed by the absorption motor are accumulated in the dustfiltering net or the dust bag, and the air devoid of the dusts isexhausted to the outside through the air exhausting hole formed on theinternal rear part of the main machine.

[0005] Usually, in case that dusts exist on the corner section or thegap section upon cleaning of the bottom part with use of the vacuumcleaner, a user could not bring the absorption nozzle close to the dustaccumulated section and sucking force does not reach that dustaccumulated section, whereby the dust gets difficult to wipe out.

[0006] In the meantime, the Korean Utility Model Publication No.20-0295799 discloses a multifunction vacuum cleaner, wherein amultifunction box for receiving a variety of materials such as powderfor a fire extinguisher for putting out a fire, water, etc., isinstalled in a blasting path, and an on/off valve is installed in theblasting path connected with the multifunction box.

[0007] Such multifunction vacuum cleaner exhausts the fire extinguishingpowder or water contained in the multifunction box, to the outside,performing function of a fire extinguisher or a sprinkler, bycontrolling the on/off value for opening or closing the blasting pathconnected with the multifunction box by means of a separate switch. Butthere does not exist function of improving cleaning efficiency byblowing down the dusts accumulated on the corner section or the gapsection, to the outside.

[0008] Also, the Korean Utility Model Publication No. 20-0205450discloses a vacuum cleaner capable of blowing down dusts on the bottomportion and absorbing the same simultaneously, by installing a tube of asmall diameter in the interior of the absorption pipe and by guiding theair discharged from the absorption motor to this tube of a smalldiameter.

[0009] But, as this vacuum cleaner simultaneously performs blastingoperation and absorption operation at the terminal part of theabsorption pipe, the dusts accumulated in the bottom portion is notabsorbed in but, instead, scattered around due to blasting force, sothat cleaning efficiency is rather lowered.

SUMMARY OF THE INVENTION

[0010] To solve the above-indicated problems, it is, therefore, anobject of the present invention to provide a vacuum cleaner capable ofimproving cleaning efficiency by absorbing dusts through the absorptionport mounted on the front part of the main machine after blowing downthe dusts accumulated in the corner section or the gap section, to theoutside using air pressure discharged to the rear part of the mainmachine of the vacuum cleaner.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above objects, features and advantages of the presentinvention will become more apparent from the following detaileddescription when taken in conjunction with the accompanying drawings, inwhich:

[0012]FIG. 1 is a perspective view of an embodiment of the presentinvention;

[0013]FIG. 2 is a longitudinal, cross-sectional view of the aboveembodiment of the present invention;

[0014]FIG. 3a is a cross-sectional view of a crucial part for a statuswhere the second exhausting hole is closed in the above embodiment ofthe present invention; and

[0015]FIG. 3b is a cross-sectional view of a crucial part for a statuswhere the second exhausting hole is opened in the above embodiment ofthe present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0016] A preferred embodiment of the present invention will now bedescribed with reference to the accompanying drawings. In the followingdescription, same drawing reference numerals are used for the sameelements even in different drawings. The matters defined in thedescription such as a detailed construction are nothing but the onesprovided to assist in a comprehensive understanding of the invention.Thus, it is apparent that the present invention can be carried outwithout those defined matters. Also, well-known functions orconstructions are not described in detail since they would obscure theinvention in unnecessary detail.

[0017] In order to realize the foregoing object, the present inventionhas a closed space part in the internal rear part of the vacuum cleanerto which external air is absorbed through the absorption motor, and hasan exhausting hole to which the blasting nozzle is joined, in the closedspace part.

[0018] Namely, as shown in the preferred embodiment of the presentinvention with reference to FIG. 1 through FIG. 3b, the presentinvention in the vacuum cleaner 10, wherein the absorption motor 12 isprovided in the internal rear part of the main machine 11 and the dustfiltering net 13 is provided in the internal front part of the mainmachine 11, includes a closed space part 15 prepared in the internalrear part of the main machine 10 in which the absorption motor 12 isinstalled, and an exhausting hole 16 to and from which a blasting nozzle17 is freely attached and detached, in the closed space part 15.

[0019] According to the embodiment shown in the drawings, a joining pipe18 is prepared in an entry side of the exhausting hole 16, and aspraying container 19 for exhausting solution contained in the sprayingcontainer, to the outside through the exhausting hole 16 usingexhausting pressure discharged from the exhausting hole 16, is mountedin this joining pipe 18 in a free attaching/detaching manner, andadditionally, a plurality of second exhausting holes 20 is formed on anouter surface of the closed space part 18, and a shutter plate 21having, in the front part, a connecting hole 22 in response to thesecond exhausting hole 20, is installed in freely movable manner inright and left directions.

[0020] The reference numerals 14 and 23 stand for an absorption fan anda spray connecting pipe, respectively.

[0021] According to the present invention having the foregoingconstruction, external air absorbed through the absorption motor 12 isexhausted only to the exhausting hole 16 of the closed space part 15 incase that the second exhausting hole 20 is closed by the shutter plate21 as shown in FIG. 3a, so that strong blasting force is obtained. Thepresent invention blows down dusts accumulated on the corner section orthe gap section, to the appropriate place for absorption using thestrong wind discharged from the blasting nozzle 17, effectivelyeliminating the dusts.

[0022] Also, according to the present invention, cleaning water in thespraying container 19 is sprayed together with strong wind by thepressure of the air discharged from the exhausting hole 16 in case thatthe spraying container 19 containing cleaning water, etc., is joined tothe joining pipe 18 prepared in the entry side of the exhausting hole16, whereby the outer surface or inner bottom portion of a car ispossibly cleaned.

[0023] In the meantime, in case that blasting force through theexhausting hole 16 is not used, the blasting nozzle 17 could beseparated, and if, as shown in FIG. 3b, the shutter plate 21 is moved toone side so that the second exhausting hole 20 may be opened, then theair in the closed space part 15 could be exhausted to the outsidethrough a plurality of the exhausting holes 20, whereby load of theabsorption motor 12 is reduced.

[0024] As is apparent from the foregoing, the present invention has theclosed space part 15 in the internal rear part of the main machine 11 inwhich the absorption motor 12 is installed, and has, in the rear portionof the closed space part, the exhausting hole 16 through which strongwind is exhausted. Thanks to such construction, the present inventioneasily eliminates dusts by blowing down dusts accumulated on the cornersection or the gap section, and sprays cleaning water using strongpressure in case that the spraying container 19 is joined to the entryside of the exhausting hole 16, so that the bottom portion is moreeffectively cleaned.

[0025] While the invention has been shown and described with referenceto certain preferred embodiments thereof, it will be understood by thoseskilled in the art that various changes in form and details may be madetherein without departing from the spirit and scope of the invention asdefined by the appended claims.

What is claimed is:
 1. A vacuum cleaner such that an absorption motor ismounted in an internal rear part of a main machine and a dust filteringnet is mounted in an internal front part of the main machine, the vacuumcleaner comprising: a closed space part provided in an internal rearpart of a main machine; and an exhausting hole to and from which ablasting nozzle is freely attached and detached, provided in a rear partof the closed space part.
 2. The vacuum cleaner according to claim 1,wherein a joining pipe is prepared in an entry side of the exhaustinghole, and a spraying container for exhausting solution contained in thespraying container, to the outside through the exhausting hole 16 usingexhausting pressure discharged from the exhausting hole 16, is mountedin the joining pipe in a free attaching and detaching manner.
 3. Thevacuum cleaner according to claim 1 or claim 2, wherein a plurality ofsecond exhausting holes is formed on an outer surface of the closedspace part, and a shutter plate having, in a front part, a connectinghole in response to the second exhausting hole, is installed in a freelymovable manner in right and left directions.